The
CNPS7000A-Cu weighs close to 800 grams, so it is
not surprising that all that copper works to keep temperatures very low.
The initial test results are shown for both the large (P4) and small (AthlonXP)
die interface tests. We are ranking this list by the 100W small interface die
test results, but in just a moment we'll do the same for Pentium4 test
die.

[Socket A] Rise
Above Ambient Temp. (c)

Mfg.

Model

27mm large copper block

15mm small copper block

27mm large copper block

15mm small copper block

50W

50W

100W

100W

Thermalright

SLK800

13.1

15.8

23.5

29.9

Thermalright

AX-7

13.1

15.4

24.4

30.4

Tocools

Novasonic-AlCu

13.0

17.8

29.2

32.9

Zalman

CNPS7000A-Cu

12.4

16.5

24.9

34.4

Coolink

U1P2

13.3

19.8

26.8

36.1

Tocools

Novasonic

18.0

17.0

31.5

36.5

Coolermaster (high)

ASBV73U1

13.4

18.1

24.7

36.7

Thermal Integration

TI-V77L

12.6

17.9

31.0

37.1

Arkua

628

18.8

18.2

35.0

38.4

Sibak

AC02625B

18.1

35.8

20.0

41.5

Thermalright

SLK-900A

16.8

23.4

34.5

44.9

Sibak

AC06725TH

20.4

23.7

39.2

45.2

Coolermaster

HHC-001

18.3

23.1

34.3

46.4

Jetart

JAKS29

15.1

25.2

30.9

46.8

AVC

Tundra2

19.4

26.5

37.0

49.1

Aopen

ACK7L

22.0

26.0

41.2

51.8

Thermalright

SK-7

19.3

22.8

37.9

52.1

Coolermaster

HSC-V62

26.0

31.4

40.3

53.1

Zalman

CNPS6000-Cu

21.6

29.0

40.8

53.4

Scythe

Kamakaze

18.9

27.2

34.1

53.6

Spire

5F263

22.1

29.2

41.7

53.6

Taisol

CGK760092

19.3

37.8

27.9

54.1

AVC

112AM1

21.8

28.1

45.3

54.8

Arkua

728M-7N01

19.7

27.0

39.7

55.0

Titan

TTC-CU9TB/SC

22.4

28.6

42.2

57.5

Thermalright

SK6+

17.0

30.7

33.2

58.7

Taisol

CEK787172

16.9

32.0

35.8

60.5

Titan

D9TBCu35R1

23.0

31.7

47.2

61.5

nPowertek

TTIC NPH-2

14.6

30.0

40.0

61.9

Verax

P14Cu

25.8

31.9

49.7

63.2

Spire

5U213C1H3G

26.0

34.6

47.3

63.5

Spire

SPA04B4

24.4

33.6

48.6

65.1

ArcticCooling

CuSilent2

22.6

37.0

48.0

66.6

Akasa

AK821

26.7

34.5

51.4

70.5

Verax

P11T

35.1

43.6

64.8

76.6

50W

50W

100W

100W

As a low
noise heatsink the Zalman CNPS7000A-Cu simply excels. The two Thermalright
heatsinks performed as they did only with the help of a 66dBA loud fan - so
just imagine a screaming vacuum cleaner under your desk as opposed to the fairly quiet
42 dBA Zalman cooler which came in only a few degrees less in our
tests. The new Tocools Novasonic-AlCu also holds up well to the
CNPS7000A-Cu.

As a socket A heatsink the CNPS7000A-cu
has one major limitation; the retention system for this socket relies upon
the AMD motherboard mounting holes. Since these mounting holes in the PCB around
the socket are far from common, the CNPS7000A-cu is not universally
acceptable. Luckily, most performance oriented AMD AthlonXP
motherboards worth their salt have the mounting holes in the PCB
included. If you're motherboard doesn't, I'm afraid you'll have to look
elsewhere as there is no way to mount the Zalman CNPS7000A-cu without them.

Up next, we take a look at the results for this
heatsink on the Intel Pentium 4 Socket 478 platform.